EP3859835A4 - ACTIVE ANODE MATERIAL AND ITS MANUFACTURING PROCESS - Google Patents

ACTIVE ANODE MATERIAL AND ITS MANUFACTURING PROCESS Download PDF

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Publication number
EP3859835A4
EP3859835A4 EP19883788.2A EP19883788A EP3859835A4 EP 3859835 A4 EP3859835 A4 EP 3859835A4 EP 19883788 A EP19883788 A EP 19883788A EP 3859835 A4 EP3859835 A4 EP 3859835A4
Authority
EP
European Patent Office
Prior art keywords
manufacturing process
anode material
active anode
active
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19883788.2A
Other languages
German (de)
French (fr)
Other versions
EP3859835A1 (en
Inventor
Dong Hyuk Kim
Il Geun Oh
Yong Ju Lee
Se Mi Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Energy Solution Ltd
Original Assignee
LG Energy Solution Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Energy Solution Ltd filed Critical LG Energy Solution Ltd
Publication of EP3859835A1 publication Critical patent/EP3859835A1/en
Publication of EP3859835A4 publication Critical patent/EP3859835A4/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
    • C23C16/18—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metallo-organic compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/26—Deposition of carbon only
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/4417—Methods specially adapted for coating powder
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
    • C23C16/4486—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by producing an aerosol and subsequent evaporation of the droplets or particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0421—Methods of deposition of the material involving vapour deposition
    • H01M4/0428—Chemical vapour deposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621—Binders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
EP19883788.2A 2018-11-13 2019-11-11 ACTIVE ANODE MATERIAL AND ITS MANUFACTURING PROCESS Pending EP3859835A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180139256A KR102543071B1 (en) 2018-11-13 2018-11-13 Negative electrode active material and preparation method thereof
PCT/KR2019/015245 WO2020101301A1 (en) 2018-11-13 2019-11-11 Anode active material and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3859835A1 EP3859835A1 (en) 2021-08-04
EP3859835A4 true EP3859835A4 (en) 2021-11-10

Family

ID=70731183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19883788.2A Pending EP3859835A4 (en) 2018-11-13 2019-11-11 ACTIVE ANODE MATERIAL AND ITS MANUFACTURING PROCESS

Country Status (5)

Country Link
US (1) US20220006077A1 (en)
EP (1) EP3859835A4 (en)
KR (1) KR102543071B1 (en)
CN (1) CN113632262B (en)
WO (1) WO2020101301A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102784050B1 (en) * 2019-08-01 2025-03-21 주식회사 엘지에너지솔루션 Negative electrode, secondary battery comprising the same, and method for preparing the negative electrode
CN113161528A (en) * 2021-04-25 2021-07-23 天津市捷威动力工业有限公司 Preparation method of double-layer composite silicon-coated material and lithium ion battery thereof
WO2023018218A1 (en) * 2021-08-13 2023-02-16 주식회사 엘지에너지솔루션 Anode active material, anode slurry, anode, and secondary battery
KR102635060B1 (en) * 2021-11-25 2024-02-08 주식회사 엘지에너지솔루션 Negative electrode active material, negative electrode and secondary battery
CN114975928B (en) * 2022-05-26 2024-03-19 湖南金硅科技有限公司 Silicon oxide mesoporous in-situ grown carbon nanotube composite material, preparation method thereof and application thereof in lithium ion battery
KR102836984B1 (en) * 2022-12-16 2025-07-21 재단법인 한국탄소산업진흥원 Method for manufacturing carbon nanotube-silicon composite anode material and carbon nanotube-silicon composite anode material prepared therefrom
KR102878573B1 (en) * 2023-04-07 2025-10-29 계명대학교 산학협력단 A method for manufacturing a nickel­coated nano­silicon/carbon nanofiber composite and method for manufacturing a secondary battery using the same
KR102900249B1 (en) * 2024-06-17 2025-12-16 주식회사 어플라이드카본나노 Method for manufacturing anode active material for secondary battery comprising silicon-based nanoparticles synthesized with carbon nanomaterials and anode active material for a secondary battery
CN119601602B (en) * 2024-11-22 2025-09-30 安徽工业大学 A nano-silicon embedded silicon oxide/carbon composite negative electrode material and its preparation method
CN121484042A (en) * 2026-01-09 2026-02-06 兰溪致德新能源材料有限公司 Silicon-carbon composite anode material with island-like highly crystalline intercalators, its preparation method, anode, lithium-ion battery

Citations (5)

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JP2004349056A (en) * 2003-05-21 2004-12-09 Mitsui Mining Co Ltd Anode material for lithium secondary battery and its manufacturing method
CN108423653A (en) * 2018-05-17 2018-08-21 天津宝兴威科技股份有限公司 A kind of preparation method of the carbon nanotube with electromagnetic wave shielding function
CN106898494B (en) * 2017-03-15 2018-09-25 西安理工大学 A kind of preparation method of carbonaceous mesophase spherules-carbon nano tube compound material
CN108604682A (en) * 2016-03-31 2018-09-28 松下知识产权经营株式会社 Anode for nonaqueous electrolyte secondary battery active material
WO2018203599A1 (en) * 2017-05-04 2018-11-08 주식회사 엘지화학 Anode active material, anode comprising anode active material, secondary battery comprising anode, and method for preparing anode active material

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FR2841233B1 (en) * 2002-06-24 2004-07-30 Commissariat Energie Atomique METHOD AND DEVICE FOR PYROLYSIS DEPOSITION OF CARBON NANOTUBES
JP5168683B2 (en) * 2004-09-17 2013-03-21 独立行政法人産業技術総合研究所 Nanocapsule structure
CN100511781C (en) * 2004-12-22 2009-07-08 松下电器产业株式会社 Composite negative-electrode active material, process for producing the same and nonaqueous-electrolyte secondary battery
JP2006339092A (en) * 2005-06-06 2006-12-14 Matsushita Electric Ind Co Ltd Nonaqueous electrolyte secondary battery and negative electrode thereof
KR101113008B1 (en) * 2008-08-04 2012-03-13 (주)썬텔 Silicon anode composite active material for lithium secondary battery
KR101607232B1 (en) * 2009-04-09 2016-03-29 삼성전자주식회사 Process for preparing anode active composite material
US10366802B2 (en) * 2009-06-05 2019-07-30 University of Pittsburgh—of the Commonwealth System of Higher Education Compositions including nano-particles and a nano-structured support matrix and methods of preparation as reversible high capacity anodes in energy storage systems
KR101610995B1 (en) * 2012-11-30 2016-04-08 주식회사 엘지화학 Silicon based composite and manufacturing method thereof
CN104617261B (en) * 2015-01-23 2017-01-18 福建翔丰华新能源材料有限公司 Method for preparing composite cathode material of silicon-carbon nanotube of lithium ion battery
US10312516B2 (en) * 2015-01-28 2019-06-04 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
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TWI690112B (en) * 2017-08-29 2020-04-01 國立成功大學 Composite electrode material and method for manufacturing the same, composite electrode containing the said composite electrode material, and li-based battery comprising the said composite electrode

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2004349056A (en) * 2003-05-21 2004-12-09 Mitsui Mining Co Ltd Anode material for lithium secondary battery and its manufacturing method
CN108604682A (en) * 2016-03-31 2018-09-28 松下知识产权经营株式会社 Anode for nonaqueous electrolyte secondary battery active material
CN106898494B (en) * 2017-03-15 2018-09-25 西安理工大学 A kind of preparation method of carbonaceous mesophase spherules-carbon nano tube compound material
WO2018203599A1 (en) * 2017-05-04 2018-11-08 주식회사 엘지화학 Anode active material, anode comprising anode active material, secondary battery comprising anode, and method for preparing anode active material
CN108423653A (en) * 2018-05-17 2018-08-21 天津宝兴威科技股份有限公司 A kind of preparation method of the carbon nanotube with electromagnetic wave shielding function

Non-Patent Citations (1)

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Title
See also references of WO2020101301A1 *

Also Published As

Publication number Publication date
WO2020101301A1 (en) 2020-05-22
EP3859835A1 (en) 2021-08-04
CN113632262A (en) 2021-11-09
KR102543071B1 (en) 2023-06-14
KR20200055519A (en) 2020-05-21
US20220006077A1 (en) 2022-01-06
CN113632262B (en) 2024-07-30

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